Machine for cutting sheet materials.



C. F; HAMMQ MACHINE FOR cunme SHEET MATERIALS.

APPEICATION FILED AUG. 13. I911.

. Patented Aug. 13,- 1918.

2 SHEETS-SHEET I.

C. F. HAMM.

MACHINE FOR CUTTING SHEET MATERIALS.

APPLICATION men AUG.I3. 1911.

1,275,250. Patented Aug. 13, 1918.

2 SHEETS-SHEET 2.

TNT OFFICE.

CARL T. HAMM, or BEVERLY, MASSACHUSETTS, ASISIGNOR, BY lvinsnn ASSIGNMENTS,

T0 UNITED SHOE MACHINERY GOBZEORATION, OF PATERSON', NEW JERSEY, A CQR- PORATION OF NEW JERSEY.

MACHINE FOR CUTTING MATERIALS.

Specification of Letters Patent.

Application filed August 13, 1917. Serial No. 186,017.

To all whom it may concern: f i

Be it known that I, CARL F. HAMM, a citizen of the United States, residing atBeverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Cutting Sheet Materials, of which the following description,-in

connection with the accompanying draw- -1ngs, 1s a specification, l1ke reference characters on the drawings indlcatmg hke parts inthe several figures.

' This invention relates to machines for cutting sheet material, and more particularly to a type of machine known as the clicking machine which is used extensively for various purposes such as for .dieing out uppers and linings inthe manufacture of boots and shoes. An object of the invention is to improve the construction of the controlling mechanism of such machines, to the end that time and expense may be saved in assembling and disassembling the parts of the mechanism, particularly when replacement is necessary on account of breakage.

The general. characteristics of a well known machine of the type to which the in-'.

vention 7 relates are illustrated in United States Letters Patent No. 1,131,686, granted onMarch 16, 1915 upon an application of H. H. Eaton. The machine shown in this patent comprises a post whichis mountedto reciprocate vertically in spaced bearings and carries a presser arm whichis moved alternately toward and from a work supporting bed by reciprocatory movement of the post,

the presser arm being mounted also to swing laterally about the axis of the post to different positions over the bed. Convenient 7 means for actuating the clutch to cause the operating movement of the presser arm 1s afiorded by a handle which is mounted on the presser arm and is movable vertically relatively to the arm" to actuate the clutch, the handle serving also as means whereby the arm may be swungto difi erent-positions over the bed. In order to maintain an operative connection between the handle and the clutch in all positions of lateral movement of the presser arm, portions of the mechanismbetween thehandle and the clutch are relatively movable about the axis of the post. "In-the machine shown in the' patent the clutch .actuatingconnect-ions comprisea leverwhich is pivotedon theframe foroperative movement in a vertical plane and has a' ring portion which encircles the post be tween the presser arm' and one'of the bearings for. the post and is spaced from the post a suitable distance to permit its operative swmgmg movement; and connecting the starting handle to this lever the machine has means including a ring member also encircling the post and having a bearing on the ring portion of the lever.

A difliculty encountered with the construct1on above'described arises from the fact that in order to remove or replace the startmg handle ring wh1ch 1s mounted to turn on the ring portion of the clutch actuating lever, it is necessary to remove the post from its bearings, and consequently breakage of this ring member, which sometimes occurs in the use of the machine, occasions considerable delay and expense. A particular object of this invention, accordingly, is to provlde a construction havingi the advantages of the construction heretofore in use without this attendant disadvantage.

' To'the above and other ends, a feature of the invention consists in an improved "construction of controlling mechanism for machines of the type described,includingpor Patented Aw. 13, 1918.

tions relatively movablev about the post'in' 1 bearing engagement witheachother, one or more of said relatively movable portions of the mechanism being so constructed as to permit it to be mounted in operative position or removed from the machine without disturbing the operative relation of other parts of the machine including the post. 1

- The invention will now be more particularly explamed with reference to theaccompanylng drawings, and the novel features of lmprovement, including certain details of construction and combinations of parts, will be pointed out in t In the drawings, Figure 1 is avi'ew in upper portion of a machine inventionis'em'bodied, I i

Fig. 2 is a perspective view on a larger scale of a portion 'ofthe connections between the starting handle'a'nd the clutch, and Fig. 3 is a plan view of a portion of the mechanism shown in-Fig. '2 detached.

he claims.

sideelevati on of alein which they V The machine comprises a frame 2 having.

upper and lowerbearings 4. and 6. in which a post 8 is mounted for rec ipr ocatory verti locations of the die upon the material, the

post 8, in the construction shown, is also mounted for turning movement in its bearings at and 6. Reciprocatory movement of thepost S is effected by rotation of a shaft, not, shown, this shaft being driven in the usual, manner through connections including a one-revolution clutch. The connections for actuating the clutch comprise a lever 1d pivoted at 16 on the frame of the machine for movement in a vertical plane,

the lever being connected with the clutch at its rear end by means of a rod 18. In order to enable the operator to actuate the clutch readily in any position of the presser arm 10 with respect to the cutting bed, a clutch actuating handle 20 is movable with the arm,

the handle being mounted for vertical sliding movement on a spindle 22 on the arm to actuate the clutch and serving also as means whereby the arm may be swung from side to side.v In order that the handle 20 may. maintain its operative relation to the clutch in all positions of lateral movement of the arm 10, the lever 14. terminates at its forward end in a ring portion which en circles the post 8 and is spaced from the post sufficiently to permit the lever to swing as required without engaging the post; and mounted to turn on the ring portion of the lever as a bearing is a member 2% connected to the handle 20 by means of a rod 26 which has its front end forked to project on opposite sides of the handle between flanges 28.

For the purposes of this invention thering portion of'the lever 14;, in the illustrative construction shown, comprises two annular parts 30 and 32, the part 30 in the con struction shown being integral with the lever, while the part 82 is detachably secured tothe part 30 by screws Set and is grooved to provide an annular bearing 36 for the member 2a which is mounted to turn thereon as shown in Fig. 2. The two parts 30'and 32 thus provide flanges which project on opposite sides of the member 24 to hold it on the bearin when the parts are secured together. The member 2 1 comprises two side portions 88 which are curved to fit the bearing 36 and terminate at a distance from each other which is less than the diameter'of thevbearing 3'6 but no less than thediameterof the post 8. As the presser arm 10 is swung in one direction or the other by means of the handle 20,'the member 24,

In order to.

by reason of its connection to the handle, turns on its bearing 36 on the lever 14k, and whatever may be the position of the arm 10 with respect to the cutting bed, downward movement of the handle 20 will serve, through the connections including the rod 26 and the member 2th, to swing the front end of the lever 14: downwardly and thus to trip the clutch by upward movement of the rod 18.

It will be evident from the preceding description that in case it becomes necessary, on account of breakage or for any other reason, to replace the member 2 1, this member may be detached from the machine simply by removing the screws 34; and lifting the annular bearing member 32 to release the member 24: from the bearing 36, whereupon the opening between the two side portions 88 of the member 24 permits the mem ber to be removed transversely of the post 8.

By a reversal of these operations a new member may be mounted in operative position. It will be evident, moreover, that when the parts are in their assembled rela tion, detachment of the member 2% from its bearing is prevented by reason of the fact that the opening between the two side portions 88 is of a width less than the diameter of the bearing 36 upon which the member is mounted.

While the invention is disclosed herein by reference a construction including the detachable bearing ring 32 as well as other specific details, it will be understood that in its broader aspects the invention is not limited to the precise construction shown.

I-Iaving described the invention, what I claim as new'and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, the combination with a post and a presser member mounted thereon and movable laterally relative assembling or disassembling movement thereof transversely of the post while the post remains in operative position.

2. In a machine of the class described, the combination with a post and a presser member mounted thereon and movable laterally about the aXis of the post, of clutch actuat-.

ing mechanism comprising a handle movable laterally with the presser member, and connections to said handlefor controlling the operation of the machine including parts relatively movable about the axis of the post and having portions curved around the post in bearing-engagement with each less than the diameter of the post to permit it to be removed from the machine while the post remains in operative position.

3. In a machine of the class described, the combination with a post and a presser member mounted thereon and movable laterally about the axis of the post, of controlling mechanism comprising a handle movable laterally with the presser member, and connections to said handle for controlling the operation of the machine including a part provided with a bearing curved about the post and a member mounted to turn on said bearing, said last named member having two side portions partially embracing said bearing and terminating at a distance from each other 'lessthan the diameter of the bearing but no less than the. diameter of the 0st. p 4. In a machine of the class described, the combination with a post and a presser member mounted thereon and movable about'the axis of the post, of clutch actuating mecha nism comprising a controlling member movable laterally with the presser member, and

connections between said controlling mem-" ber and the clutch including a lever having a ring portion encircling the post and a part mounted to turn on said ring portion as a bearing, said part having two side portions partially embracing said bearing and terminating at a distance from each other less than the diameter of the bearing but no less than the diameter of the post.

5. In a machine of the class described, the combination with a frame having spaced bearings, a post mounted for reciprocatory movement in said bearings, and a presser member mounted on the post between said bearings for laterally swinging movement about the axis of the post, of starting means comprising a lever having at one end a ring portion loosely encircling said post between the presser member and one of said bear- 7 ings, a handle mounted to swing with said presser member and also to move in directions transverse to the path of its swlnging movement, and means connecting said handle to the lever comprising an operating member mountedto turn on said ring portion of the lever, said parts being so constructed and arranged as to permit said operating member to be removed from the machine or mounted in operative position without disturbing the relation of said post and its bearings.

6. In a machine of the class described, the

combination with a post and a presser member mounted on the post for laterally swinging movement, of starting means compris ing a lever having at one end a ring portion loosely encircling the post and constructed to provide an annular bearing, a handle mounted to swing with said presser member and also to move in directions transverse to the path of its swinging movement, and means connecting said handle to the lever comprising an operating member mounted to turn on said ring portion of the lever, said operating member having two side portions partially embracing said bear.- ing and terminating at a distance from each other no less than the diameter of said post to permit the member to be positioned in or out of its working relation to the axis of said ring portion by a movement transversely of the post.

' 7. In a machine of the class described, the

combination with a postand a presser mem- I said handle to the lever comprising an operating member mounted to turn on said ring portion of the lever, said operating member having two side portions partially embracing said bearing between said flanges and terminating at a distance from each other less than the diameter of said bearing but no less than the diameter of the post.

8. In a machine of the class described, a post 8, bearings 4 and 6 in which the post is mounted, a ring 30, 32 encircling the post between said bearings and providing a bearing 36, and a member 24 mounted on said bearing 36 and including two side portions 38 terminating at a distance from each other less than the diameter of said bearing but no lessthan'the'diameter of the post.

In testimony whereof I have signed my name to this specification;

- CARL F. HAMM.

00,1 0! this patent maybe obtained for five cents each, by addressing the Commissioner of Iatentl,

Washington, D. 0. l 1 

